:root{--bg:#0b0d12;--fg:#f2f3f5;--muted:#9aa1ad;--accent:#6ea8ff}@media (prefers-color-scheme:light){:root{--bg:#f7f8fa;--fg:#111318;--muted:#5b6270;--accent:#1f5fd1}}*{box-sizing:border-box}body,html{margin:0;min-height:100%}body{background:var(--bg);color:var(--fg);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.wrap{min-height:100vh;max-width:720px;margin:0 auto;padding:48px 20px;display:flex;flex-direction:column;justify-content:center}.tag{color:var(--accent);font-weight:600;letter-spacing:.08em;text-transform:uppercase;font-size:.85rem;margin:0 0 16px}h1{font-size:clamp(2rem,6vw,3.4rem);line-height:1.1;margin:0 0 20px}.lead{color:var(--muted);font-size:1.15rem;line-height:1.6;margin:0 0 32px}.btn{align-self:flex-start;padding:12px 22px;border-radius:999px;background:var(--accent);color:#fff;text-decoration:none;font-weight:600}.btn:hover{opacity:.9}